Air conditioning apparatus for passenger cars



18 Sheets-Sheet i Oct. 1l, 1932.

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Oct. 1l, 1932.

W. B. WHITSITT AIR CONDITIONING APPARATUS FOR PASSENGER CARS Filed May4, 1931 18 She'ets-Sheet 6 Oct. l1, 1932. w. B. wHlTslTT AIRCONDITIONING APPARATUS FOR PASSENGER CARS Filed May 4. 19251 18Sheets-Sheet 7 31a/vento@ Oct. l1, 1932. w. B. wHlTslTT AIR CONDITIONINGAPPARATUS FOR PASSENGER CARS Filed May 4, 1931 18 Sheets-Sheet 9 dummy,

Oct. 11, 1932. w. B. wHxTslTT 1,882,537

AIR CONDITIONING APPARATUS FOR PASSENGER CARS Filed May 4. 1931 1esheets-sheet 1o ggg. /z

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Oct. 11, 1932. W B, WH|T5|TT 1,882,537

AIR CONDITIONING APPARATUS FOR PASSENGER CARS Filed May 4. 1931 18Sheets-Sheet 14 Oct. ll, 1932. W; B WH|T5|TT` 1,882,537,

AIR CONDITIONING APPARATUS FOR PASSENGER CARS Filed May 4, 1931 1BSheets-$116011; l5

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AIR CONDITIONING APPARATUS FOR PASSENGER CARS Filed May 4, 1951 A 18Sheets-Sheet 16 gyn/vanto Oct. l1, 1932.` w. B. wHlTslTT AIRCONDITIONING APPARATUS FOR PASSENGER CARS Filed May 4, 1951 18Sheets-Sheet 17 gwuwstof, Wann/v WH/r/rr Oct. ll, 1932. w. B. wHlTslTTAIR CONDITIONING APPARATUS FOR PASSENGER CARS Filed May 4, 1931 18Sheets-Sheet 1B f77/Y frs/.snm (fr una) .grt-9. 34.

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MLU/m WH/TS/ rrv fum No me Patented Oct. 1l, 1932 WILLIAM.: B. WHITSITT,F BALTIMORE, MARYLAND AIB CONDITIONING APPARATUS FOR PASSENGER CARSApplication led Hay 4, 1931. Serial No. 534,995.

This invention relates to an air conditioning apparatus for railwaypassenger cars.

One object of the invention is to provide a simple, reliable andefficient apparatus for 5 regulating the temperature and humidity of theair in a car and circulating the air while eliminating all objectionabledrafts.

A further object of the invention is to provide an air conditioningapparatus having its working elements operated and governed by a sourceof primary electric or mechanical energy independent of the usualelectric or mechanical equipment of a car, whereby it is possible tooperate the air conditioning equip- 5 ment at any and all times, whetherthe train is in motionl or standing, or in an isolated yard where othersources of electric current or mechanical power are not available.

Still another object of the invention is to 30 provide an airconditioning apparatus employing an internal combustion motor as aprimary source of energy, and means acting in the event of accidentalinjury or leakage of the fuel supplying means for the motor, to

5 render the fuel non-inflammable or to extinguish escaping portions offuel which may have become ignited, in order to obviate the liability ofa contlagration and consequent damage to the car.

'3 Still another object of the invention is to provide means acting inthe event of the es cape of motor fuel and its ignition, and governed bythe action of the extinguishing agent, for eil'ecting an operation ofthe air 5J brake mechanism to bring the train in which the airconditioned cars are arranged to a stop.

Still another object of the invention is to provide an air conditioningapparatus which T' can be installed on existing cars at a low cost andwithout marring the interior finish of the car, and which can be appliedto new cars when building at a cost very little, if any, in

excess of what the same car would cost n equipped with ordinary bulkheadand ceiling fans.

Still another object of the invention is to provide an air conditioninapparatus of ,o such simple, reliable and efficient design that itsoperation and maintenance can be easily taken care of without requiringthe services of specially trained men.

Still another object of the invention is to provide an arrangement fordistributing conditioned air at intervals throughout the length of thepassenger compartment of a car at one side of the car only, wherebyordinary upper deck ventilators at the opposite side of the car may beused for Ventilating purposes in the ordinary manner in case the aircondi- 00 tioning apparatus of the car should, from ang cause, becomeinoperative.

till another object of the invention is to provide means wherebyconditioned air may be properly supplied uniformly, and without 05annoying drafts, throughout the length of the passenger compartments ofcars having passenger compartments of different lengths, whereby theapparatus is rendered available for use on coaches, diners, combinationcars, T0 sleepers, and other cars of a train having passengercompartments varying in size, whereby the automatic air conditioning ofall the cars of a solid train is rendered possible.

Still another object of the invention isto provide a novel constructionand arran ment of parts for cooling and regulating t e temperature andhumidit of air supplied to a passenger car and circulating the airthroughout the car, whereby an apparatus for 3 obtaining and carryingout the foregoing objects of the invention in a certain and reliablemanner is produced.

With the above and other objects in view, the invention consists of thefeatures of construction, combination and arrangement of parts,hereinafter fully described and claimed, reference being had to theaccompanying drawings, in which:-

Fig. 1 is a diagrammatic to plan view of 9 a railway coach showing inotted lines the seats and compartments of the coach and parts of the newair conditioning apparatus applied thereto.

Fig. 2 is a view in side elevation of the 95 same.

Fig. y3 is a view similar to Fig. 1, showing the application of theinvention to a dining car.

Fig. 4 is a sidefelevation of the same. 10

` showing essential elements of the air conditioning apparatus on anenlarged scale.

Fig. 8 is a vertical transverse section through the cooling tower.

Fig. 9 is a horizontal transverse section through the portion of a carcontaining the air conditioning unit, taken substantially on line 9 9 ofFig. 10.

Fig. 9a is a diagrammatic plan view of the air distributing conduit anddeector baiiie arrangement to secure even distribution of air in thecar.

Fig. 10 is a vertical transverse section taken substantially on line10-10 of Fig. 9.

Fig. 11 is a vertical longitudinal section through the air conditioningunit taken on the line 11-11 of Fig. l0.

Fig. 12 is a plan view looking from above toward the car roof and theparts shown in Figs. 9, 10 and 11, with the trap door removed.

Fig. 13 is an enlarged ,vertical transverse section through the air ducton the line of one of the air outlets and associated baiies ordeflectors taken, for example, on the line 13-13 of Fig. 14.

Fig. 14 is a horizontal section taken on line 14--14 of Fig. 13. A

Figs. 15 and 16 are views similar to Fin'. 14 showing differentarrangements of bafiies or deflectors for use at different points in thelength of a car having a long passenger compartment.

Figs. 17 and 18 are sections corresponding to Fig. 14 taken on lines17-17 and 18-18 of Figs. 15 and 16, respectively.

Fig. 19 is a plan View of the internal combustion engine generator setor unit, showing the engine air intake nozzle and reversible duplexdamper controlling the same in position for admission of air when thecar is running in one direction.

Fig. 20 is a view of the engine cooling air intake nozzle showing thedamper in position for admitting air when the car is running in theopposite direction.

Fig. 21 is a side elevation of the parts shown in Fig. 19.

Fig. 22 is a top plan view of the engine radiazor and a modified form ofradiator Fig. 23 is a side elevation of the parts shown in Fig. 22.

Fig. 24 is a top plan view showing the arrangement of the engineradiator, engine radiator cooling water supply tank, and connectingpipes.

Fig. 25 is a front elevation of the same.

Fig. 26 is a side elevation of the parts shown in Figs. 24 and 25.

Fig. 2T is a tog plan view showing the gasoline and car on tetrachloridesupply tanks and their supports and connections.

Fig. 28 is a View in elevation of the same.

' Fig. 29 is a longitudinal section through the gasoline supply tank andits guard jacket or casing.

Fig. 3() is a vertical transverse section thereof.

Fig. 31 is a sectional view showing the plug or union connection betweenthe feed pipe sections of the tank shown in Figs. 29 and 30.

Fig. 32 is a diagrammatic view showing the electric circuits of theapparatus.

Figs. 33 and 34 are views showing positions of the switches for regularoperation of the cooling equipment.

While the apparatus employed will be in general the same regardless ofthe type of car to which it is applied, two different arrangements arepreferably employed and disclosed herein, one for use in coaches, dinersor other single-type cars in which, because of lack of space or forgreater convenience, the air conditioning unit is disposed over theceiling in the upper deck at one end of the car and a cooling tower forcooling the refrigerant condensing water is placed in the vestibule ofthe car, and the other for use in combination coach and baggage or othercombination-type cars in which, because of space afforded or for greaterconvenience, the air conditioning unlt and cooling tower are placed inthe baggage com* partment of the car. Variations are aise employed inthc arrangement of baffles or deiiectors associated with the outlets ofthe distributing ducts of cars having passenger compartments ofdifferent lengths in order to prevent drafts and to secure a uniformdistribution of the air within the car.

Referring now more particularly to the drawings, Figs. 1 and 2 show arailway passenger car A of coach type, the same having a passengercompartment extending practically continuously between toiletcompartments at the opposite ends of the car and in which passengercompartment the seats a are arranged; Figs. 3 and 4 show a dining car Adivided into kitchen, pantry and dining compartments a, a2 and a3,respectively, the compartment a3 having the usual arrangement of diningtables a* and seats a5 and constituting the passenger compartment of thediner; and Fig. 5 shows a combina tion type of car, to wit, acombination coach and baggage car A2 having a passenger compartment a inwhich seats al are arranged and a baggage compartment as. Both kinds

